Device for bottle-polishing machines



11; 18 1927. c. R. NIXON DEVICE FOR BOTTLE POLISHING MACHINES Filed Feb. 6, 1926 Patented Jan. 18, 1927.

UNITED STATES PATENT OFFICE.

CLARENCE B. NIXON, OF BALTIMORE, MARYLAND, ASSEGIX OR TO SVI'IN'DELL BROTH- ERS, A FIRM COMPOSED OF WALTER B. SW'INDELL, CHARLES J. B. SWINDELL, VTALTER B. SWINDELL, JR., VJILLIAM E. SVTINDELL, AND HARRY O. BRAWNER,

OF BALTIMORE, MARYLAND.

DEVICE FOR BOTTLE-POLISHING MACHINES.

Application filed February 6, 1926. Serial No. 86,466.

This invention relates to bottle polishing machines of the type illustrated in Letters Patent No. 1,609,035 and No. 1,609,036, dated November 30, 1926, filed February 12, 1925.

More particularly the invention relates to a polishing roll transversing device for such machine.

Experience has shown that the polishing of bottles of uniform size on such machines as are shown in the copending applications aforesaid tends to produce local wear on the polishing roll opposite each bottle so that shortly the roll becomes grooved and thus when an attempt is made to polish bottles of a different size there is an ineffective Operation of such polishing roll because of its corrugated surface caused by wear.

An important object of the present invention is to provide improved means for causing such roll to reciprocate longitudinally during its rotationso that all parts of the roll are equally exposed to wear.

In a machine of this character the polishing roll is necessarily somewhat weighty and it is difficult to move a heavy roll of this character longitudinally in its bearings while it is stationary or running slowly At the same time when the roll runs longitudinally it is very easy to shift it longitudinally.

A second important object of the invention is to provide an improved means for reciprocating the roll so arranged that it will be automatically inoperative While the roll is at rest and will only produce full operation when the roll has reached a certain definite speed, this speed will depend on the weight of the roll and the pressure of the bottles thereagainst when in use.

With the above and other objects in view as will be hereinafter apparent, the invention consists in general of certainnovel details of construction and combinations of parts hereinafter fully described, illustrated in the accompanying drawings and specifi cally claimed.

In the accompanying drawings like charactors of reference indicate like parts in the several views, and:

Figure 1 is a side elevation of a bottle polishing machine embodying the lmproved roll reciprocating mechanism.

Figure 2 is a detail plan view of the'roll reciprocating mechanism removed from the balance of the structure.

In the present embodiment of the invenu tion there isshown a frame structure supporting a bottle holding and reciprocating mechanism indicated in general at 11, these being of the same general type as that shown in Letters Patent No. 1,609,036, dated No vember 30, 1926, filed February 12, 1925, and operating in the same manner so that it is not necessary in the present case to supply a detail description of these parts and their manner of operation as the same forms no part of the present invention.

Mounted in bearings 12 supported on the top of the frame 10 are the journals 13 of a polishing drum 1 1 and these journals are of sufficient length to slide longitudinally in the bearings as well as to rotate therein. Also, the bearings 12 are spaced sufticiently to permit the drum 1 1 to reciprocate longitudinally. On one of the journals is mounted the belt pulley 15 which is driven from a driving pulley 16 by a belt 17, the pulley 16 being located on a shaft 18 which also carries a pulley 19 suitably connected by a belt 20 to a source of power. On the frame 10 is also journaled a shaft 21 whereon is a belt pulley 22 connected by a belt 23 with a suitable source of power. Fixed on the shaft 21 is also a pulley 24; which is connected by a belt 25 with the driving pulley 26 of the mechanism 11.

A single belt shifter 27 is provided. for the belts 20 and 23 as seen in Figure 1.

Coming now to the features which particularly distinguish this invention it willbe seen that on one side of the frame 10 there is mounted an L-shaped bracket 28 which carries a pivot bolt 29 whereon is pivoted a lever 30 having at one end an angular arm 31 to which is fixed a fork 32 embracing a reduced portion 33 of a journal 13, a. nut

and washer 34 being provided to hold the fork on the reduced portion. In the upper frame member is provided a pocket 35 wherein is seated one end of a coil compression spring 36, the other end bearing against the lever 30 between the bolt 28 and the arm 31. At the remaining end of the lever 30 there is provided a pair of plates 37 between which extends a pivot bolt 39 passing through a lever 40 intermediate its ends. One end of this lever 40 normally engages the inner face of the lever 30 While the other end is provided with a fork 41 carrying a roller 42 which bears against a face cam 43 fixed on the shaft 21. Extending through that end of the lever 40 which lies against the lever 30 is a headed bolt 44 which is screwed into the lever 30 as shown at a5 and carried by the lever 4:0 on each side of this bolt 44 is a guide member l6 which are free to slide transversely of the lever 30. Between the member 46 and the head tel; is a coil compression spring 47. In the operation of the device it will be seen that the levers 30 and i0 practically constitute a single lever so long as the spring 47 is not compressed. However, if there is sufficient resistance to the longitudinal movement of the drum 1% the lever 40 will rotate about the pivot 39 since the spring 47 will compress under these conditions, it being assumed that the cam 4:3 is rotating. Now in starting there will be a very considerable resistance to such longitudinal movement of the drum 14 so that at the start of the operation anduntil the drum has picked up its speed there will be no reciprocation of such drum but after a certain speed has been reached the resistance to longitudinal movement will be so lessened that the levers 4:0 and 30 will operate as one, and the fork 32 will oscillate so that the drum will be reciprocated.

For convenience in the claims this type of lever will be described as a break joint lever.

There has thus been provided a simple and efficient device of the kind described and for the purpose specified.

It is obvious that minor changes may be made in the form and construction of the invention without departing from the material spirit thereof. It is not, therefore, desired to confine the invention to the exact form herein shown and described, but it is desired to include all such as properly come within the scope claimed.

Having thus described the invention, what is claimed as new, is:

1. In a bottle polishing machine, a frame,

a bottle holding and reciprocating device supported by the frame, a bottle polishing drum mounted on said frame for rotative and longitudinally reciprocating movements,

said drum being provided with journal ends,

an oscillating lever mechanism including a break joint'lever and engaging one of said journals to reciprocate the drum, and means to actuate said lever mechanism.

2. In a bottle polishing machine, a frame, a bottle holding and reciprocating device supported by theframe, a bottle polishing drum provided with journals mounted on said frame for rotative and longitudinally reciprocating movements, a break joint lever pivoted intermediate its ends to said frame, a fork at one end of said lever, one of the journals having a reduced portion wherewith said fork engages to reciprocate the drum,-means urging said lever in one direction, and means on'the frame adjacent the remaining end of the lever and operative to cause oscillation of said lever.

3. In a bottle polishing machine, a frame, a bottle holding and reciprocating device supported by the frame, a bottle polishing drum provided with journals mounted on said frame for rotative and longitudinally reciprocating movements, an annular reduced portion on one of said journals, a break joint levercomprising a main member pivoted intermediate its ends to the frame and a secondary member pivoted inter mediate its ends to one end of the main member, one end of the secondary member extending along one side of the main mem her, the engaging sides of said membersbeing parallel to the axes of their pivots,.a spring normally holding said ends in engagement, a second spring bearing against the main member and urging the same in one direction about itspivot, a fork on the remaining end of the first member engaging the reduced journal portion, and a rotatable cam mounted on the frame and engaging the remaining end of the secondary member.

In testimony whereof I affix my signature.

CLARENCE R. NIXON. 

